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Gentoo Linux Security Advisory                           GLSA 202003-63
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: GNU IDN Library 2: Multiple vulnerabilities
     Date: March 30, 2020
     Bugs: #697752
       ID: 202003-63

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Synopsis
========

Multiple vulnerabilities have been found in GNU IDN Library 2, the
worst of which could result in the remote execution of arbitrary code.

Background
==========

GNU IDN Library 2 is an implementation of the IDNA2008 + TR46
specifications (RFC 5890, RFC 5891, RFC 5892, RFC 5893, TR 46).

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-dns/libidn2              < 2.2.0                    >= 2.2.0

Description
===========

Multiple vulnerabilities have been discovered in GNU IDN Library 2.
Please review the CVE identifiers referenced below for details.

Impact
======

A remote attacker could send specially crafted input, possibly
resulting in execution of arbitrary code with the privileges of the
process, impersonation of domains or a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU IDN Library 2 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-dns/libidn2-2.2.0"

References
==========

[ 1 ] CVE-2019-12290
      https://nvd.nist.gov/vuln/detail/CVE-2019-12290
[ 2 ] CVE-2019-18224
      https://nvd.nist.gov/vuln/detail/CVE-2019-18224

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202003-63

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5